I am planning a nine-day London trip in August, and a large family transfer appears in the bank statement covering my application. I feel worried that the deposit will look like borrowed travel money despite stable employment, so I want to document its source, explain the trip budget and align my leave letter, payslips and accommodation honestly.
Explain the unusual transaction in a short factual note and attach evidence of its source and purpose if the current checklist permits; do not hide it or relabel it as salary. Reconcile the available funds with the trip budget, payslips, employment, approved leave, accommodation and return plan. Checklist: statements covering the requested period, source evidence, employer letter and itinerary, with translations if required. The relevant route and evidence depend on circumstances, so verify GOV.UK and do not treat explanation as approval: https://www.gov.uk/browse/visas-immigration.